IS200EXCSG1A GE EX2100, EXCITER CONDUCTION SENSOR

Description:

Functional Description

The IS200EXCSG1A is a Conduction Sensor Board developed by General Electric specifically for the EX2100 Series of Excitation Control Systems. Within these systems, the IS200EXCS (EXCS) Conduction Sensor Board plays a crucial role in detecting bi-directional current flow across a bus line. This board receives its power supply from the IS200EGPA Exciter Gate Pulse Amplifier Board (EGPA), which also filters the output signals from the EXCS before forwarding them to the IS200EMIO Exciter Main Input/Output Board (EMIO).

To detect current, the EXCS board employs two unidirectional Hall Effect sensors positioned in opposite directions. These sensors generate a logical output based on the presence or absence of a magnetic field. Specifically, when either sensor detects a magnetic field exceeding its operational threshold—indicating current flow—a logical low output is produced by the circuit. Once the magnetic field drops below a certain release point, the sensor remains in this low output state.

The EXCS board features gapped steel rings attached to it for monitoring current flow. These rings are part of the bus route, and the concentrated magnetic flux generated within them is measured by the Hall Effect sensors mounted on the circuit board. The EXCS board is directly mounted to the bus line, with the steel rings secured by a plastic mounting bracket.

The EXCS board requires a power supply input of +12.0 V dc with a tolerance of ±5%, consuming no more than 0.3 watts, along with a 12 V dc return. This power is supplied by the EGPA board. For redundancy, the EGPA board receives two identical logical output signals from each EXCS board. Logical high outputs are defined as above 11 V dc, while logical low outputs are below 1.2 V dc. All inputs and outputs are connected via a single 4-pin P1 connector.

Three EXCS boards are used in total, one for each bus line, each powered by a single EGPA board. The EGPA board then transmits the filtered output signals from all three EXCS boards to the EMIO board for further processing.

Application Data

The Power Conversion Module (PCM) cabinet houses the EXCS board, which is designed without fuses, test points, LED indicators, or any movable hardware components. The board features only one 4-pin connector, P1, for all its input and output connections.

Datasheet Link:

IS200EXCSG1A GE EX2100, EXCITER CONDUCTION SENSOR PDF Datasheet